Color

#030f3f

#030f3f
hex#030f3f
rgbrgb(3, 15, 63)
hslhsl(228, 91%, 13%)
oklchoklch(0.2 0.093 265.1)
Closest name: Infinite Night (#071037)Relative luminance 0.0072

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3f3303

#032d3f · #15033f

#3f030f · #0f3f03

Split-complementary

Open in tool →

#3f1503 · #2d3f03

#3f032d · #3f3303 · #033f15

Contrast

#030f3f as textRatioAAAA largeAAAFix
Aaon white
18.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.14:1failfailfail
  • AA: use #4669f6 as the text (4.61:1)
  • AAA: use #7791f9 as the text (7.2:1)
  • AA: or shift the background to #808080 (4.65:1)
  • AAA: or shift the background to #a1a1a1 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #030f3f as the background.

Brands using this color

Fonts for this mood

#030f3f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030f3f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #030f3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030f3f-9c9fc4-df7c4e-231f2d-e9eff1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md